Professional 2-Ring Hop Up Bucking for 

The Modify  Professional 2-Ring Hop Up Bucking features two internal ribs which provide an improved air seal, and prevents the bucking from shifting on the barrel when installed.

Specifications:
Manufacturer: Modify
Model: Professional 2-Ring Hop Up Bucking
Colour: Black
Material: Rubber
Package Includes: One (1) Bucking

Features:

• High Quality Construction
• 2 ribs prevent sliding
• Two ribs prevent sliding and maximise the seal.
• Maximise the air seal
• Hardness: 55-60 degrees
• Suitable for all